Stock image showing the inner layers of the Earth. A new paper states that the inner core may contain an extra, innermost core. iStock / Getty Images Plus. Before this discovery, the ...

Earth's inner core is a roughly moon-size chunk of solid iron and nickel that lies more than 3,000 miles (4,800 kilometers) below our feet. It is surrounded by the outer core — a superhot layer ...

In the mid-1990s scientists found evidence that Earth’s inner core, a superheated ball of iron slightly smaller than the moon, was spinning at its own pace, just a bit faster than the rest of ...

Scientists say they’ve confirmed Earth’s inner core has been slowing down. Here’s what it could mean — and why the topic has been the subject of fierce debate.

The rotation of Earth’s inner core may have paused and it could even go into reverse, new research suggests.

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Earth's inner core may have paused and reversed its spin, a new study suggests.; Earthquakes and nuclear blasts can send seismic waves through the mysterious solid-iron core. Those waves hint that ...

Scientists say they’ve confirmed Earth’s inner core has been slowing down. Here’s what it could mean — and why the topic has been the subject of fierce debate.

As the Earth gradually cools, the inner core expands outwards at the surrounding iron-rich liquid "freezes." That said, it is still extremely hot, at least 5,000 Kelvin (K) (4,726.85°C) .

10TV wanted to help by finding some easy, kid-friendly craft projects you can do with your kids for Earth Day using recycled materials you likely already have in your home.

The spinning of Earth’s inner core is slowing down. ... What is increasingly clear is that the inner core is susceptible in different ways to activity in the layers of Earth that encircle it.